Abstract:In order to filtrate the feasible tillage technology in sloping farmland of Yuxi dryland area,four tillages including reduce tillage,no-till,subsoiling tillage and conventional tillage were studied on the content of soil water and soil nutrient and its utilization and run off complexion.The results showed as following:with subsoiling tillage and no-till,the soil water storage were increased and the content of the soil organic quality,N,P and K content were evidently higher than conventional tillage,especially the effects of the whole N and alkali solution N in upper soil layer and the available P and soon effect K in deeper soil layer were more obvious,and the times and content of water run-off were reduced effectively,and soil nutrient run-off were reduced too.Therefore,the use efficiency of soil water and the production efficiency of soil nutrient can be improved after with subsoiling tillage and no-till.Compared with conventional tillage,the water use efficiency,the N,P,K production efficiency,the yield of winter wheat and the economic benefit increased by 16.37%,17.40%,19.80%, 19.44%,23.22% and 29.36% respectively after with subsoiling tillage and those items also improved by 10.62%,10.27%,12.54%,12.19%,15.38% and 21.13% after with no-till.